Good post Zeebee but I reckon a lot of aviators or would-be aviators - young and old - would still find interest and education in the ASD if it was available online.
Probably need to get the nod from CASA re copyright.
JT, if copyright still exists, then it would reside with the Commonwealth of Australia through the Commonwealth Copyright Administration (CCA) body, rather than CASA per se. (CASA might just give you the runaround). My non-expert interpretation is that the copyright may have expired after 25 years from publication but I could be wrong. The Copyright Act also has general exemptions for 'fair dealing' etc which pprune might be able to utilise.